| | Queen Elizabeth II Stamps 2000 Millennium Projects (4th series). “Life and Earth” 
| 374 | 
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Stamps are for illustration purposes only | Cat Ref | Stamp Description | Mint Value | Used Value | Price Guide | |
| 2138 | (2nd.) | Type 1451 | £0.70 | £0.75 | | 2139 | (1st) | South American leaf-cutter ants (“Web of Life” Exhibition, London Zoo) | £1.25 | £1.00 |
| 2140 | 44p. | Solar sensors (Earth Centre, Doncaster) | £1.50 | £1.50 | | 2141 | 64p | .Hydroponic leaves (Project SUZY, Teesside) | £2.25 | £1.50 |
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